(Ambiya') 21 : 80
وَعَلَّمْنَاهُ صَنْعَةَ لَبُوسٍ لَكُمْ لِتُحْصِنَكُمْ مِنْ بَأْسِكُمْ ۖ فَهَلْ أَنْتُمْ شَاكِرُونَ
And We taught him the fashioning of armors to protect you in battle; will you then be grateful?
See explanation 2: 152 and 16: 80.